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Dr Abdul Mannan: Patient Has CAPS with 7000 Platelets – Do You Anticoagulate?

Abdul Mannan/LinkedIn

Jan 6, 2026, 08:49

Dr Abdul Mannan: Patient Has CAPS with 7000 Platelets – Do You Anticoagulate?

Dr Abdul Mannan, Consultant Haematologist at Betsi Cadwaladr University Health Board, shared a post on LinkedIn:

“Platelets 7,000. Your patient has CAPS (Catastrophic Antiphospholipid Syndrome). Do you anticoagulate?

This is the dilemma every haematologist dreads.

Catastrophic APS (CAPS) throws you into a perfect storm: sky-high thrombotic risk meets dangerous bleeding territory. The instinct is to anticoagulate aggressively. But at 7,000 platelets, that can be fatal.

Here’s the “Bridge to Anticoagulation” approach:
Step 1: HOLD and TRANSFUSE
Stop therapeutic anticoagulation
Give platelet transfusions (unlike TTP, this is safe in CAPS)
Continue immunosuppression and plasma exchange

Step 2: Watch the Safety Window
Platelets <20k: Hold anticoagulation, continue triple therapy
Platelets 20-50k: Consider prophylactic dosing
Platelets >50k: Resume therapeutic anticoagulation

Step 3: Choose UFH
Short half-life, reversible with protamine
Avoid LMWH and warfarin initially
Rule out HIT if platelet recovery stalls

Fourth line: Eculizumab If platelets stay below 20k despite triple therapy, think complement-mediated microangiopathy. Eculizumab can be a lifesaver here.
The bottom line? Don’t let fear of thrombosis push you into fatal bleeding at 7,000. Build the platelet bridge first.
CAPS Task Force recommendations (2020) and real-world experience support this stepwise approach.
Have you managed CAPS with severe thrombocytopenia? What was your strategy?”

Dr Abdul Mannan: Patient Has CAPS with 7000 Platelets - Do You Anticoagulate?